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32857 Parchem Technical Data Compendium 2015_Crop4emag.pdf

CONTENTS CONCRETE REPAIR CORROSION CONTROL GROUTS & ANCHORS PROTECTIVE COATINGS INDUSTRIAL FLOORING SURFACE TREATMENTS JOINT SEALANTS CONCRETE JOINTING JOINT FILLERS WATERPROOFING WATERSTOPS ROOFING TIMBER FLOORING ALPHABETICAL INDEX Technical Data Index® Helasto-ring Sheet 543 Plastic support ring for concrete pavers with leveling adjustment Uses Helasto-ring is designed to be easily divided into fractions: „For the row of slabs adjacent to the surrounding wall, the half ring is used „For the slabs at the angle, the fourth ring is used „To set the three slabs on an external angle, the three quartes ring is used The leveling disk is a Helasto-ring accessory that is applied Iike a wedge, in order to stabilise the slabs that are not sufficiently flat, or when the surface is irregular. Generally it is used in quarters and put between the Helastoring and the corner of the unstable slab. In terraces that are not exactly multiples of the slab measurements, the row touching the surrounding wall must be cut, or, as in the case of smaller measurements, the free space between the floor and the projecting part can be fllled with pebbles. The drainholes are installed at the waterproofing blanket level and furnished with a flat leaf filter. The joints between the slabs are not to be filled. They should be left free to promote rapid water drainage. For flooring to be installed over heat insulation, the insulatlng material should have a compressive strength superior to 2 kg/cm². Description Concrete terraces cast directly onto waterproofing blanket can cause considerable problems. During the day the paving, heated by the sun, expands; at night, when the sun’s heat ceases, the paving cools and therefore contracts. This alternating movement, which is concentrated along the expansion joints of the floor, is transmitted then to the underlying waterproofing blanket, damaging it through fatigue. To eliminate this problem it is necessary to isolate the floor the floor from the waterproofing underneath. Index has resolved this problem with Helasto-ring, a plastic mounting for square paving slabs in precast concrete. With Helasto-ring, the pavement does not touch the waterproofing blanket, but is separated from it by a hollow space; in this way, the pavement can expand and contract without damaging the water-tight blanket. Helasto-ring is simply dry set onto the waterproofing. To install the square paving slabs on the supporting Helastorings, it is enough to set the slabs at the four angles of the ring and push them against the spacer; once the first row is measured and set, the successive ones follow as a consequence. Helasto-ring can be set on multilayer bituminous waterproofing, on bituminous sheathing waterproofing or on synthetic sheet waterproofing. The floor is completely precast. It is dry set; mortar is not needed. It can be installed in any season. Specialised workmen are not needed. And it is without joints in that they are already included in the storing mounting. May 2013


32857 Parchem Technical Data Compendium 2015_Crop4emag.pdf
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